Emotional Lighting Design of Indoor Spaces by Kansei Engineering

摘要

New lighting applications aspire to provide more benefits –than simply allowing vision– such as improving mood, sleepquality, and daily performance. 3D printing and laser cutting technologies found an application in the design of luminaries with verycomplicated artificial structures where the creation of unique light patterns is achieved. Computer-based, lighting simulation andassessment tools can assist in the creation and analysis of the lighting quality of space. However, these outcomes depend on thelighting designer’s knowledge and experience. It is necessary to develop methods to quantitatively evaluate people’s feelings andpreferences toward such stimuli and to implement those emotional qualities into the lighting of space. This introductory studyproposes a lighting design approach where the elements of light patterns, such as the direction of light, the beam pattern, the colortemperature of light and the symmetry of light distribution, are assumed as design elements. The second assumption was that the litlamp has a different appearance than the non-lit lamp, thus these can be understood as two different products requiring two differentKansei scales in order to evaluate the emotional impressions they give to the perceiver. In this context, the study had two goals: (a) toapply Kansei Engineering for the classification of lit and non-lit wall sconces based on the people's emotional perceptions; (b) toimplement the people's emotional preferences of wall sconce's lighting into the selection of a wall sconce that creates an intendedspace mood in the dark and an invisible effect in daylight.